var express = require('express');
var path = require('path');
var favicon = require('serve-favicon');
var logger = require('morgan');
var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');
var routes = require('./routes/index');
var users = require('./routes/users');
var acounts = require('./routes/acounts');
var admins = require('./routes/admins');

var session = require("express-session");
var MongoStore=require('connect-mongo')(session);
var db = require('./db');
var app = express();
// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'jade');

// uncomment after placing your favicon in /public
//app.use(favicon(__dirname + '/public/favicon.ico'));
app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(cookieParser('weichaos5210'));
app.use(express.static(path.join(__dirname, 'public')));
app.use(session({
    secret:'weichaos5210',
    cookie:{
        maxAge:30*1000*10	//过期时间，一过期mongodb自动删除。
    }
}));
// error handlers
app.use(function(req,res,next){
//    res.locals.user=req.session.user;
    var err=req.session.error;
    var success=req.session.success;
    var name=req.session.name;
    var mess=req.session.message;
    delete req.session.success;
    delete  req.session.error;
    delete  req.session.message;
    if(err){
        res.locals.message="*"+err;
    }
    if(mess){
        res.locals.message="*"+mess;
    }
    if(success){
        res.locals.success=success;
    }
    if(name){
        res.locals.name=name;
    }
    next();
});
app.use('/', routes);
app.use('/users', users);
app.use('/acounts', acounts);
app.use('/admins', admins);

//app.use(express.static("./routes"));
//
//app.get("/", function(req, res) {
//    res.sendFile("./routes/index.js");
//});

// catch 404 and forward to error handler
app.use(function(req, res, next) {
  var err = new Error('Not Found');
  err.status = 404;
  next(err);
});



// development error handler
// will print stacktrace
if (app.get('env') === 'development') {
  app.use(function(err, req, res, next) {
    res.status(err.status || 500);
    res.render('error', {
      message: err.message,
      error: err
    });
  });
}

// production error handler
// no stacktraces leaked to user
app.use(function(err, req, res, next) {
  res.status(err.status || 500);
  res.render('error', {
    message: err.message,
    error: {}
  });
});

//var app = require('../app');
var debug = require('debug')('microblog:server');
var http = require('http');

/**
 * Get port from environment and store in Express.
 */
var port = normalizePort(process.env.PORT || '3000');
app.set('port', port);
/**
 * Create HTTP server.
 */

var server = http.createServer(app);

/**
 * Listen on provided port, on all network interfaces.
 */

server.listen(port);
server.on('error', onError);
server.on('listening', onListening);

/**
 * Normalize a port into a number, string, or false.
 */

function normalizePort(val) {
    var port = parseInt(val, 10);

    if (isNaN(port)) {
        // named pipe
        return val;
    }

    if (port >= 0) {
        // port number
        return port;
    }

    return false;
}

/**
 * Event listener for HTTP server "error" event.
 */

function onError(error) {
    if (error.syscall !== 'listen') {
        throw error;
    }

    var bind = typeof port === 'string'
        ? 'Pipe ' + port
        : 'Port ' + port;

    // handle specific listen errors with friendly messages
    switch (error.code) {
        case 'EACCES':
            console.error(bind + ' requires elevated privileges');
            process.exit(1);
            break;
        case 'EADDRINUSE':
            console.error(bind + ' is already in use');
            process.exit(1);
            break;
        default:
            throw error;
    }
}

/**
 * Event listener for HTTP server "listening" event.
 */

function onListening() {
    var addr = server.address();
    var bind = typeof addr === 'string'
        ? 'pipe ' + addr
        : 'port ' + addr.port;
    debug('Listening on ' + bind);
}




module.exports = app;
